shift points and idle messed up

[Woods-Rider]

when i am in park my idle is around 2000, but if i am in drive or reverse and on the brake then its at a normal 1000 or so. also, something is going on with my shifting. it is shifting very rough and to get it to shift i need to get it up to like 4000 rpm or more and sometimes it wont shift at all. it wont go into overdrive nomatter what i do. this seemed to all start after a short wheeling trip and more specifically after going through a mud hole. any ideas.

 

[Wicked_Sludge]

is your CEL or ABS light on?

sounds like you may have damaged the VSS in the rear diff....but start by checking the vehicle over for unplugged/damaged wiring and connectors.

 

[Woods-Rider]

no lights are on and a quick lookover under the hood revealed nothing. what is a VSS?

 

[martin]

I would first check very carefully for a vacuum leak. they can cause all kinds of issues similar to the ones you are experiencing.

 

[Woods-Rider]

how do you check for a vacuum leak? do i need any special tools?

 

[martin]

do a visual check for broken or cracked hoses. they can be very difficult to see. If you don't find anything read this section from the tech library. http://www.therangerstation.com/Magazine/Summer2003/VacuumLeaks.htm

 

[Woods-Rider]

So i checked for vacuum leaks everywhere and couldnt find any. finally i found out that my throttle position sensor was broken. fixed that and everything works fine now.

 

[Wicked_Sludge]

glad you got it sorted out